May 21, 2024
ISO 21150 - Cosmetics - Escherichia coli Test
ISO 21150 standard specifies guidelines for the detection and identification of the specified microorganism Escherichia Coli in cosmetic products.
ISO 21150 Test Method
Product samples are dispersed into the enrichment broth to make initial suspension. For water-miscible products, 1 ml of product sample is dispersed in 9 ml of enrichment broth. In the case of water-immiscible products, 1g of product sample is premixed with a dispersing agent (e.g. polysorbate 80) and then dispersed in 9 ml of enrichment broth. While dealing with filterable products, filtration is performed through the membrane and followed by initial suspension preparation.